/Engine/Source/Runtime/Engine/Classes/GameFramework/PlayerController.h
Builds a list of components that are hidden based upon gameplay. This calls both UpdateHiddenActors and UpdateHiddenComponents, merging the two lists.
void BuildHiddenComponentList ( const FVector & ViewLocation, [TSet](API\Runtime\Core\Containers\TSet)< [FPrimitiveComponentId](API\Runtime\Engine\FPrimitiveComponentId) > & HiddenComponentsOut )